2-(Tributylstannyl)-1,3-thiazole → 3-[2-(6-Fluoro-pyridin-2-yl)-imidazol-1-ylmethyl]-4-propyl-6-thiazol-2-yl-pyridazine

HRID 1244264Notes

Reaction equation

HRID 1244264 reaction equation
Cl[C:2]1[N:7]=[N:6][C:5]([CH2:8][N:9]2[CH:13]=[CH:12][N:11]=[C:10]2[C:14]2[CH:19]=[CH:18][CH:17]=[C:16]([F:20])[N:15]=2)=[C:4]([CH2:21][CH2:22][CH3:23])[CH:3]=1.C([Sn](CCCC)(CCCC)[C:29]1[S:30][CH:31]=[CH:32][N:33]=1)CCC>C1(C)C=CC=CC=1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[F:20][C:16]1[N:15]=[C:14]([C:10]2[N:9]([CH2:8][C:5]3[N:6]=[N:7][C:2]([C:29]4[S:30][CH:31]=[CH:32][N:33]=4)=[CH:3][C:4]=3[CH2:21][CH2:22][CH3:23])[CH:13]=[CH:12][N:11]=2)[CH:19]=[CH:18][CH:17]=1

Participants

5

Reactant 2

HCID 27632592-(Tributylstannyl)-1,3-thiazoleHCID 10382055HCID 10382055, compound

Product 1

HCID 104298633-[2-(6-Fluoro-pyridin-2-yl)-imidazol-1-ylmethyl]-4-propyl-6-thiazol-2-yl-pyridazine

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 1140TolueneSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of 6-chloro-3-[2-(6-fluoro-pyridin-2-yl)-imidazol-1-ylmethyl]-4-propyl-pyridazine (268 mg, 0.81 mmol), 2-tributylstannanyl-thiazole (453 mg, 1.21 mmol), and Pd(PPh3)4 (0.08 mmol, 93 mg) in toluene (10 mL) is degassed. The mixture is then heated at 100° C. overnight. Saturated KF aqueous solution (8 mL) is added and the mixture is stirred for 15 minutes. The layers are separated and the aqueous layer is extracted with EtOAc (10 mL). The combined extracts are washed with brine (15 mL), dried (Na2SO4), and evaporated. Preparative TLC (5% methanol in DCM) purification of the residue provides the title product. 1H NMR (CDCl3) 8.14–8.18 (m, 2H), 7.97 (d, 1H0, 7.83 (q, 1H), 7.50 (d, 1H), 7.20 (d, 1H), 7.18 (d, 1H), 6.80 (dd, 1H), 6.28 (s, 2H), 2.80 (t, 2H), 1.62–1.73 (m, 2H), 0.97 (t, 3H).

Workup

  1. customis degassed
  2. additionSaturated KF aqueous solution (8 mL) is added
  3. customThe layers are separated
  4. extractionthe aqueous layer is extracted with EtOAc (10 mL)
  5. washThe combined extracts are washed with brine (15 mL)
  6. dry with materialdried (Na2SO4)
  7. customevaporated
  8. customPreparative TLC (5% methanol in DCM) purification of the residue

Sources & evidence

ORD record
ord-7519edfd623d4a2a94ddf779f93d0515
Source dataset
uspto-grants-2006_10
Patent number
US07122546B2

Reaction notes

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